Speeze IceStream

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SUMMARY:

Ice

Crazy PC

AKASA

Base

The fan is an Everflow Model #R127015DU – a 70 x 15mm unit rated at 26 cfm @ 4200 rpm. I found it to be tolerably quiet – I measured its noise at 62 dBA with a Radio Shack sound meter 8″ from the fan’s intake, substantially less than a Delta 38 (about 69 dBA). It’s also safe to use a motherboard fan header.

In summary, a fairly conventional aluminum extrusion heatsink with a very secure and easy to use clip.

THE TEST

The IceStream was first tested on the CPU Die Simulator which gives results that are unaffected by motherboard influences. I then tested it on a Lucky Star P4A845D with a modified P4 1500 to read CPU case temps, as an example of what users might see on their systems.

TEST RESULTS – CPU Simulator

Heatsink
Die Temp
Ambient Temp
Delta
C/W
IceStream
53.7 C
22.4 C
31.3 C
0.43

TEST RESULTS – Motherboard
CPU/Motherboard

CPU Case Temp

Ambient Temp

Delta

C/W

MBM Temp

P4 1500, Lucky Star P4A845D

36.8 C

23.5 C

13.3

0.23

31 C

Delta = CPU temp – Ambient Temp
C/W = Delta / CPU Watts

Interpreting C/W: For every watt (CPUw) that the CPU
consumes, the HSF will limit the CPU’s temperature rise to (C/W x CPUw)
plus the temperature at the HSF’s fan inlet. For example, at an ambient temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that CPU temp will increase 50 x 0.25 = 12.5 C over ambient temp, or 37.5 C. The lower the C/W, the better.

Motherboard results results place the IceStream in the mid rank of heatsinks (Heatsink Ranking).

CONCLUSIONS

Thanks again to Crazy PC for sending this our way.

Email Joe

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